condition mean min max ZT0-3 0.04814845 0.04814845 0.04814845 ZT4-7 0.01985265 0.01985265 0.01985265 ZT8-11 0.08071060000000001 0.08071060000000001 0.08071060000000001 ZT12-15 0.0521145 0.0521145 0.0521145 ZT16-19 0.06892885 0.06892885 0.06892885 ZT20-23 0.051172 0.051172 0.051172